Gas fired boiler

Discussion in 'HVAC Heating & Cooling' started by citykid, Dec 25, 2007.

  1. citykid

    citykid New Member

    Jan 27, 2006
    Hello all,
    I usually keep the water level in the glass tube at 3/4. That's where the fill line is. But now, the glass tube is completely full. I drain the boiler for a while but the tube does not empty but rather the low water level light goes on (so not to run the boiler without water).

    When heat kicks in, the boiler gets pretty loud. Much louder than usual. I can hear rumbling in the pipes leading out of the boiler to the radiators.

    I plan on calling the gas company to have a basic check up anyway, but does this sound familiar to anyone?

    Merry Christmas.
  2. Wet_Boots

    Wet_Boots Sprinkler Guy

    Mar 23, 2007
    Metro NYC
    Sounds like the fill valve isn't shut off.
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  4. Furd

    Furd Engineer

    Jul 3, 2007
    Retired energy systems engineer
    Wet side of Washington State
    Your lower gauge glass connection may be plugged.
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